Bacterial inhibition method for metal processing liquid, and system thereof

Abstract

The invention relates to a bacterial inhibition method for a metal processing liquid, and a system thereof. A metal processing liquid supply unit is connected with a feeding system and supplies the metal processing liquid to the processing system, the metal processing liquid supply unit heats the metal processing liquid at a temperature of 65DEG C or more for at least 1min before or after the processing system starts to run, a bacterium number detection unit is used for detecting the number of bacteria contained in the metal processing liquid, and a data processing and control unit is connected with the bacterium number detection unit and the metal processing liquid supply unit to record the bacterium number and regulate the heating temperature and the heating time. So the method and the system make the bacterium number of the metal processing liquid be less than a control value without the additional addition of a sterilization agent or the shut-down heating for sterilization, and have no influences on the quality or the characteristics of the metal processing liquid.

Description

technical field [0001] The invention relates to a method and system for inhibiting bacteria, in particular to a method and system for inhibiting bacteria in metalworking fluids. Background technique [0002] The decomposition process of metalworking fluids by active microorganisms is often accompanied by mass loss, oxygen consumption, water and carbon dioxide production, and the appearance of free acids and new substances. Although animal and vegetable oils are environmentally friendly and biodegradable raw materials, their operation and use There is still room for improvement in low temperature environment suitability, oxidation resistance and antibacterial properties. [0003] Generally, the microbial decomposition of metalworking fluids (such as lubricating oil) involves three steps: hydrolysis of esters, oxidation of long-chain carbohydrates, and ring opening of aromatic rings after enzymatic decomposition; different metalworking fluids have different degrees of difficul...

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Problems solved by technology

[0008] Disadvantages: The compound formula fungicide used is 2-(thiocyanomethylthio)-benzothiazole (2-(thiocyanomethylthio)-benzothiazole) and hexahydro-l,3,5-tri(2-hydroxyethyl)- s-triazine (hexahydro-l,3,5-tris(2-hydroxyethyl)-s-triazine) compounds, which exist more or less in oil mist and water vapor, cause harm and burden to the operating environment and human body

[0011] Disadvantages: The formula fungicide used is oxazolidine / iodopropynyl-butyl carbamate (oxazolidine / iodopropyl-butyl-carbamate) compound, which is more or less present in oil mist and water vapor, causing harm to the operating environment and human health. burden

[0014] Disadvantages: The formula fungicide used is l,4-bis(bromoacetoxy)-2-butene compound, which exists more or less in oil mist and water vapor, causing harm and burden to the operating environment and human body

[0017] Disadvantages: The formula fungicide used is a pyrithione compound, which exists more or less in the oil mist and water vapor, causing harm and burden to the operating environment and personnel

[0020] Disadvantages: The formula fungicides used are maleic anhydride-based compounds, thienyl-based compounds and / or halogenated amide-based compounds, which are more or less present in oil mist and water vapor, causing harm to the operating environment and the body of personnel. burden

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